Leonardo mckeel marsh



(No Model.)

L. MOK. MARSH." SCREW DRIVER AND BIT HOLDER. No. 442,710. Patented Dec.16, 1890.

l vvcweos so awwwboz iUnrrnn STAT S PATENT Orrrcn.

LEONARDO MOKEEL MARSH, OF SPAULDING, NEBRASKA, ASSIGNOR OF ONE HALF TOG. N. ADAMS AND JOHN V. BRADY, OF SAME PLACE.

SCREW-DRIVER AND BIT-HOLDER.

SI ECIFICATIGN forming part of Letters Patent No. 442,710, datedDecember 16, 1890.

Application filed March 22, 1890. Serial No. 344,896. (No model.)

To all whom it may concern:

Be it known that I, LEONARDO McKEEL MARSH, a citizen of the UnitedStates, residing at Spaulding, in the county of Greeley and State ofNebraska, have invented certain new and useful Improvements in aCombined Screw-Driver and Bit-Holder; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

This invention relates to a combined screwdriver and bit-holder.

The object of the invention is to produce a device of the abovedescription which may be used in an ordinary bit-stock and of suchconstruction that it may be instantly converted from a screw-driver intoa bit-holder, and vice versa.

A further object of the invention is to produce a device which shall ,besimple of construction, efficient and durable in use, and which may beproduced at a cost sufficiently low to place it within the means ofmechanics desiring such a tool.

Vith these objects in view the invention consists, broadly, of apartially hollow tube or casing provided at one end with a flattenedportion forming a screw-driver and at the opposite end with a socket.

The invention further consists in the combination, with the socketportion, of a shank provided at one end with a squared portion adaptedto engage the jaws of the bit-stock and at the other end with a socketadapted to receive a bit and fit within the socket on the tube.

The invention further consists in the combination, with a hollow tube orcasing provided at one end with a screw-driver and the opposite end witha socket, of a shank provided with a socket adapted to receive a bit,the said socket and bit being adapted to fit within the socket of thetube or casing, and a spring for holding the two parts together.

The invention finally consists in the various novel details ofconstruction, as will be hereinaftcr fully described in thespecification,

illustrated in the drawings, and more particularly pointed out in theclaims.

In the accompanying drawings, forming part of this specification, and inwhich like letters of reference indicate corresponding parts, I haveillustrated one form of device embodying the essential features ofmyinvention, although the same may be carried into effect in other wayswithout in the least departing from the spirit thereof, and in thesedrawings- Figure l is a side elevation of the shank for holding the bit.Fig. 2 is a similar view of the tube forming the screw-driver and casingfor the bit. Fig. 3 is a longitudinal sectional view of the tube orcasing, showing its internal construction, and Fig. 4 is an elevationshowing the device when used as a screwdriver.

Referring to the drawings, 1 designates the screw'driver, which consistsof a hollow cylindrical tube or casing 2, having at one end a socket 3,carrying a spring 4:, which fits in a recess 5, formed in the saidsocket, and at the other end a flattened portion 7, forming thescrew-driver proper. The outer end of this spring is provided with a lugor shoulder 6, adapted to fit over the edge of the said socket. Withinthis socket is adapted to fit So another socket 8, carried by a shank 9,in which is secured, by means of a movable pin 10, a bit 11, the saidbit being adaptedto rest within the recess 12 in the tube. The oppositeend of the shank 9, which carries the socket 8. is provided with asquared portion 13, adapted to be engaged by the jaws of an ordinarybit-stock.

The parts of this device are to be made of any suitable material, butpreferably of steel hardened and tempered so as to produce a durabletool.

hen the device is to be used as a screwdriver, the socket 8 is slippedwithin the socket 3, and is held therein by means of the spring 5 4,before referred to; but when it is desired to use it as a bit the springis raised by drawing the two parts away from each other, and

the squared portion is then inserted into the bit-stock in the ordinarymanner. It will thus be seen that although this device is exceedinglysimple of construction it will be found of the highest efficiency anddurability in use and may be constructed at a slight expense.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

1. The herein-described screw-driver and bit-holder, consisting of atube or easing provided at one end with the screw-driier and theopposite end with a socket, and a shank provided with a socket adaptedto fit in the socket of the tube and having a squared portion adapted tobe engaged by the bit-stock.

2. In a combined screwdriver and bitholder, the combination of a shankprovided at one end with a squared portion adapted to be engaged by thebit-stock and at the other end a socket adapted to receive the bit, and

a tube or casing provided with a socket adapted to engage the saidshank.

3. In a combined screw-driver and bitholder, the combination, with atube or casin g provided at one end with a flattened portion forming thescrew-driver and at its opposite end with a socket carrying a spring, ofa shank provided with a socket adapted to fit Within the socket of thetube and to be en gaged by the spring.

at. In a combined screw-driver and bitholder, the combination, with atube or casing provided at one end with a flattened portion forming ascrew-driver and at' its opposite end with a square socket carrying aspring, of a shank provided at one end With asocket, a bit engaging saidsocket, and a pin to hold the said bit in piace and at its opposite endwith a squared portion adapted to engage a bit-stock.

5. In a combined screw driver and bitholder, the combinatiornwith a tubeor casing provided at one end with a flattened portion forming ascrew-driver and at its opposite end with a square socket having arecess and a spring fitting in said recess, of a shank pro vided at oneend with a socket, a bit engaging said socket, and a removable pin forholding the said bit in place, and at its opposite end with a squaredportion adapted to engage a bit-stock.

In testimony whereof I aflix my signature in presence of two witnesses.

LEONARDO MCKEEL MARSH.

Witnesses:

W. E. I'IANNON, C. J. MARSH.

